C#•7mo ago

writing a program to calculate losses and victory in a war game for social media

i'm using c# since thats what i know alongside JS, and im attempting to convert string values to an integer for arithmetic to work. it aint doing it, and what ive tried from my documentation hasnt worked. im working on it based off this set of rules: 1 tank does 2000 1 troop does 50 1 artillery does 5000 if a tank or troop is on the offensive, they lose 25% of their hit points, if a tank or troop is on the defensive, they gain 25% more hit points. artillery cannot be on the offensive, and is locked to defensive. 1 tank has 4000 hit points, 5000 when on defense, 3000 when on offense 1 troop has 100 hit points, 125 when on defense, 75 when on offense 1 artillery has 250, as it is locked to defensive thank you!

hrhBKzMGfe.cs

Z20ncNpZq4.csproj

46 Replies

SlotsOP•7mo ago

(whoops.. i think i randomized the filenames!) heres another one

Program.cs

mfp.csproj

Buddy•7mo ago

Please use $paste

MODiX•7mo ago

If your code is too long, you can post to https://paste.mod.gg/ and copy the link into chat for others to see your shared code!

Buddy•7mo ago

Mobile devices need to download the files to see the content. And to parse as an integer, use $tryparse

MODiX•7mo ago

When you don't know if a string is actually a number when handling user input, use int.TryParse (or variants, e.g. double.TryParse)

if(int.TryParse("123", out int number))
{
    var total = number + 1;
    Console.WriteLine(total); // output: 124
}

if(int.TryParse("123", out int number))
{
    var total = number + 1;
    Console.WriteLine(total); // output: 124
}

TryParse returns a bool, where true indicates successful parsing. Remarks: - Avoid int.Parse if you do not know if the value parsed is definitely a number. - Avoid Convert.ToInt32 entirely, this is an older method and Parse should be preferred where you know the string can be parsed. Read more here

SlotsOP•7mo ago

Ah, i see

SlotsOP•7mo ago

https://paste.mod.gg/bvlzjlyptrlh/0

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SlotsOP•7mo ago

Thank you!

Buddy•7mo ago

Convert.ToInt32(artillery1) These are pointless too It doesn't do anything

SlotsOP•7mo ago

Replace it with parse?

Buddy•7mo ago

you are not saving down the result into a variable TryParse, yes. You declare Troops1 as a string It will always be a string Unless you declare another variable of integer type, parse the value and then set the newly declared variable to the result of the parse

SlotsOP•7mo ago

Alrighty, i'll get to replacing it. I'll be using these values:

int conTroops1 = 0;
int conTanks1 = 0;
int conArtillery1 = 0;

int conTroops2 = 0;
int conTanks2 = 0;
int conArtillery2 = 0;

int conTroops1 = 0;
int conTanks1 = 0;
int conArtillery1 = 0;

int conTroops2 = 0;
int conTanks2 = 0;
int conArtillery2 = 0;

SlotsOP•7mo ago

I'm unsure how I would implement it. Do I use an if statement, as shown above, or keep it individual? https://paste.mod.gg/xpfjnkpypuqt/0

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Buddy•7mo ago

Did you read the text above?

TryParse returns a bool, where true indicates successful parsing.

SlotsOP•7mo ago

So its only trying it to see if it can do it, and not doing it? I need to use int.Parse then for the actual conversion, thats what im thinking

Buddy•7mo ago

Parse just throws an exception if the format is invalid Which means your app will crash if unhandled TryParse will give you a boolean on whether it was successful or not Allowing you to gracefully quit or ask again

SlotsOP•7mo ago

Something like this to check?

if (int.TryParse(troops1, out conTroops1))
{
    var total = number + 1;
    Console.WriteLine(total);
}

if (int.TryParse(troops1, out conTroops1))
{
    var total = number + 1;
    Console.WriteLine(total);
}

Buddy•7mo ago

Read the code out loud for yourself and try to understand what it does

SlotsOP•7mo ago

Documentation scrolling time...

Buddy•7mo ago

The first part is correct, yes. The code inside the code block is not.

SlotsOP•7mo ago

I can see that number isnt declared. And it.. doesnt really do anything otherwise Hold on.

if (int.TryParse(troops1, out conTroops1))
{
    var total = conTroops1 + 1;
    Console.WriteLine(conTroops1);
}

if (int.TryParse(troops1, out conTroops1))
{
    var total = conTroops1 + 1;
    Console.WriteLine(conTroops1);
}

Buddy•7mo ago

If you want to give an error or something, you can invert the if-statement like this

if (!int.TryParse(troops1, out conTroops1)
{
     Console.WriteLine("Failed to parse troops1!");
     return;
}
int myValue = conTroops1 + 100;
Console.WriteLine(myValue);

if (!int.TryParse(troops1, out conTroops1)
{
     Console.WriteLine("Failed to parse troops1!");
     return;
}
int myValue = conTroops1 + 100;
Console.WriteLine(myValue);

SlotsOP•7mo ago

It is just now that i figured out i can just.. make the code block CS. But the error block is also useful, i'll see where I can implement it

SlotsOP•7mo ago

Output.

SlotsOP•7mo ago

if (!int.TryParse(troops1, out conTroops1))
{
    Console.WriteLine("Failed to parse troops1!");
    return;
}
int myValue1 = conTroops1 + 100;
Console.WriteLine(myValue1);

if (!int.TryParse(troops1, out conTroops1))
{
    Console.WriteLine("Failed to parse troops1!");
    return;
}
int myValue1 = conTroops1 + 100;
Console.WriteLine(myValue1);

Buddy•7mo ago

Is that correct logic of what the code does? Just want you to confirm or deny Issue was in your previous code that you tried to multiply a string by an amount, of which in C# you cannot do.

SlotsOP•7mo ago

The finished product is meant to take in values from two sides, troops, tanks and artillery on one side, and the same on the other. Based off which side is on the offensive or the defensive, it calculates the losses, and should use a randomizer to decide which side wins. TL;DR, calculates losses, randomizes the victory

Buddy•7mo ago

We are not writing the code for you. That is your task to do. However I am helping you get started.

SlotsOP•7mo ago

I know this. I'm telling you the objective. Thank you for what you've told me so far.

Buddy•7mo ago

troops1 * 0.75; this also does not do anything. For one, it's an error because troops1 is a string and secondly, it is not modifying the value. You can use the shorthand method. conTroops1 *= 0.75 Which is the equivalent to conTroops1 = conTroops1 * 0.75

SlotsOP•7mo ago

This annoying keybind keeps happening and again and again I keep forgetting how to disable it, my typing indicator is now a replacement indicator.

Buddy•7mo ago

Press insert

SlotsOP•7mo ago

Wow, that was an easy fix. Thanks!

Buddy•7mo ago

Also, based on your code. You assume the user always write what you want. What if they don't? What happens if they write Side505 Rule of programming. Never trust the user.

SlotsOP•7mo ago

Good to know.

Buddy•7mo ago

It is good to inform the users that it is an invalid prompt

SlotsOP•7mo ago

Spit an error at them. Value "Side505" is invalid.

Buddy•7mo ago

Which is exactly why TryParse is preferred, that and it doesn't throw an exception which is good for performance Avoiding exceptions is a great thing

SlotsOP•7mo ago

Exceptions are annoying, so I can see how its a great thing. Especially if you dont understand what is immediately wrong with the code.

Buddy•7mo ago

Great! Then do that. If neither matches, then write something to console, informing the user what they did was incorrect.

SlotsOP•7mo ago

if/else statement time.

Console.WriteLine("How many troops on Side 1?");
String troops1 = Console.ReadLine();
if (troops1 != /*[a number string]*/])
{
    Console.WriteLine("Please enter a number.")
}

Console.WriteLine("How many troops on Side 1?");
String troops1 = Console.ReadLine();
if (troops1 != /*[a number string]*/])
{
    Console.WriteLine("Please enter a number.")
}

SlotsOP•7mo ago

I updated the paste code: https://paste.mod.gg/gczqzmpbdcuh/0

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SlotsOP•7mo ago

if (conTroops1 != int)
{
    Console.WriteLine("Please enter a number.");
}

if (conTroops1 != int)
{
    Console.WriteLine("Please enter a number.");
}

What its trying to do here is say "if the converted troops value is not an integer, spit this error." However, the "int" is invalid.

Buddy•7mo ago

conTroops1 will always be an integer as I mentioned before It is a statically typed language Use the error given in TryParse, that validates if it is an integer or not

SlotsOP•7mo ago

This: !int.TryParse(troops1, out conTroops1 or this:

Console.WriteLine("Failed to parse troops1!"); return;

Console.WriteLine("Failed to parse troops1!"); return;

Well, the good news is that the primary issue is solved, and I am able to move on with the program. Thank you.

SlotsOP•7mo ago

https://paste.mod.gg/ibvjrtpjsjua/0 I have completed the victory randomizer part and the hit points calculation, now I need to calculate the losses using those hit points. i'm going off the below text for it: "it then calculates the losses of each side using a double randomizer, and it chooses a percentage in the form of a float ranging from 0.01 to 1. this calculation is done twice for both sides, and after multiplying the hit points of each side by the other sides chosen loss float the numbers are rounded to the nearest 1 and the final loss results are the total losses for each side, both losses kept seperate." my current issue is how i would start to calculate it, as the calculations are done inside of 2 if/else statements for all 4 possible offensive/defensive scenarios.

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writing a program to calculate losses and victory in a war game for social media